Metallic window-screen.



PATENTED NOV; 14-, 1905.

BURROWES. METALLIC WINDOW SCREEN.

APPLICATION FILED APR. 29. 1905.

WlETALLIlC winnow sossen.

Specification of Letters Patent.

Patented Nov. 14, 1905.

Application filed April 29, 1905- Serial No. 253,097.

To all whom, it WI/(Ly concern,

Be it known that I, EDWARD T. Bunnowns, a citizen of the United States,residing at Portland, in the county of Cumberland and State of Maine,have invented certain new and useful Improvements in Metallic Window-Screens, of which the following is a specification, reference being hadtherein to the accompanying drawings.

damaging influence of changing weather to which wooden frames aresubjected, resulting in the warping or loosening of the joints thereof.

With the foregoing and other objects in view a practical embodiment ofthe invention embraces any or all of the following features of novelty:First, a metallic frame comprising metallic cross-bars,similar-channeled side bars, and adjustable flanges in the latter, saidflanges being disposed to enter and have sliding movement withincomplementary guides or runways therefor upon a window-casing,sash-frame, or the like; second, an interiitting corner or connectionbetween the meeting ends of the cross-bars and the channeled sidemembers forming and adapted to maintain a true angular relation thereof;third, a relatively long bow spring or springs loosely inserted withinthe channeled side members and interposed between the connected edgethereof and the inner edge of the adjustable flange, said flange or thechanneled member having one or more abutments for the end or ends of thespring, whereby to keep the same in a predetermined or normal operatingposition; fourth, means operatively associated with the channeled sidemember or members, as the case may be, and the flange therein forpositively adjusting the latter against the tension of the interposedspring or springs to give the same an initial or primary protrusion oradjustment relative to the channeled side memher, said means alsoperforming the additional function of causing the outer or working edgeof the flange to assume an angular position relative to the edge of thechanneled side member to conform to the base of the runway with which itis to engage and which is ofttimes not truly plumb; fifth, morespecifically, said last-mentioned means including a headed screw havinga laterally-removable engagement with a recessed portion of the inneredge of the flange, said engagement being preserved while said head andinner edge are within the channel of the side member, but separable whenthey are thrown therewithout and a nut engaging the threaded end of thescrew, which projects through the connecting edge of said channeledmember and into the open space within the frame at one side of thescreen fabric thereon.

All of the above, as well as other novel de tails in construction andarrangement of parts, will be apparent from the detailed descriptionhereinafter contained, when read in connection with the accompanyingdrawings, forming part hereof, and wherein convenient embodiments of theinvention are illustrated.

In the drawings, Figure 1 is an elevation of the screen, part of one ofthe side or channeled members being broken away to show the interiorconstruction, fragmentary portions of the window-casing and runway alsoappearing in this view. Fig. 2 is a vertical sectional view of one ofthe side or channeled members, showing a slightlymodified arrangement.Fig. 3 is a detail perspective view illustrative of one of theinteriitting corner connections, the parts in this instance beingseparated. Fig. 4 is a sectional view on a line w w of Fig. 1. Fig. 5 isa similar view on line 1/ 3 same figure. Fig. 6 is a cross-sectionalview of a slightly-modified form of strip, constituting a runway. Fig. 7is a section through the center of one of the springs and immediatelyassociated parts. Fig. 8 is a detail elevation of a portion of one ofthe flanges and an adjusting-screw, and Fig. 9 is a perspective view ofan adjusting-tool.

Referring more specifically to the drawings, wherein like referencecharacters designate corresponding elements in the several views, Arepresents the ordinary sash-frame or window-casing, upon the innerfaces of the sides of which are secured strips B, each having a groove,preferably with a rounded base. and rounded ed gcs for the reception offlanges C on the screen, the complementary outer edges of which aresimilarly rounded at 0, these strips B being fastened, in place throughthe medium of tacks passing through the base of the groove thereof, asin Fig. 4, or through laterally-extended portions 6 thereof, asillustrated in Fig. 6. The purpose of rounding the base and edges of thestrips bordering the grooves therein, as also the engaging edge of theflanges, is to reduce friction between the parts and facilitate an easyworl ing of the screen up and down.

The screen comprises metallic top'and bottom bars D, preferably solid,and channeled side members E, preferably sheet metal bent upon itself,as shown, for instance, in Fig. 7, the connected edge E of which isdisposed inwardly relative to the body of the screen. The flanges Cbefore referred to are designed to be adjustably mounted within thechannels of the side bars E. The means for connecting the top, bottom,and side members of the frame, whereby to constitute the cornersthereof, comprises a tongue F at each end of the bars D, adapted toenter between and snugly fit within the space intermediate a pair ofears G at each end of the side members E, the ears being provided bycutting out an angular portion of the connected edge of the sidemembers, by which cutting out I also afford a substantially U-shapedshoulder g to abut the wide inner edge f of the top and bottom barsimmediately adjoining the tongues F. hen the two members are broughttogether and the one firmly seated within the other, a rivet H, passingtransversely therethrough, effectually locks the parts against any playwhatever and will maintain them in a true angular relation, it beingalso observed that when thus associated the straight edges f, of the topand bottom bars engage the corresponding edges g of the side members. Toenable the flanges (I to properly work back and forth within thechanneled side members, as also to preserve a continuous bearing of theouter edge of said flange throughout the entire length of the screen,the inner corners thereof are cut away, as at 0, to accommodate thetongues F of the interfltting corners, as clearly shown in Figs. 1, 2,and

At suitable points conveniently one disposed toward each end of thescreen-frame I provide elongated pockets 1 in the flanges C for thereception of relatively long bowsprings J, the latter having flat ends 7engaging the edge of the flange, while the back thereof is disposedtoward and abuts the inner face of the connected edge e of the channeledside member, the shoulders K of the pockets confining the spring in apredetermined working position. The springs are square in crosssection,Fig. 7. The tendency of these springs is to force the flanges Coutwardly into engagement with the base of the guide-groove in thestrips B, as before stated, and to prevent complete separation of theflanges from the channeled members when the screen is removed from thecasing, as also to enable an initial adjustment of the flanges relativeto the side members, I provide separated adjusting-screws L, onearranged adjacent to each of the springs J. Each screw comprises athreaded shank Z, passing loosely through an aperture in the connectededge e of the member E, and a head a at its inner end adjoining anintermediate restricted or neck portion Z, adapted to be inserted in alateral direction into a complementary keyhole-slot M in the flange C,with which it is associated. A nut N, engaging the threaded shank Z andabutting the surface of the connected edge 0, will draw the screw,andincidentally the flange, inwardly against the tension of the springs Jor permit them to be thrust outwardly by said springs, as desired.

It is to be noted that by my particular engagement between the headedends of the screws and the flanges the two are preserved in fixedrelation as long as they are positioned within the channeled sidemembers; but as soon as the adjustment is loosened a sufficient extentto allow the headed ends of the screws and their engaging portions ofthe flanges to escape the outermost edges of said channeled members theflanges may be readily slipped away from said headed ends and detached.

Vhile I have just described the use of two springs at each side of thescreen, this description being with particular reference to the formillustrated in Fig. 1, it is clear that in many instances one springwill suffice, such as illustrated in Fig. 2. In all other respects thescreen of this figure is quite similar to that of said first-mentionedform, the spring in the present instance being somewhat longer. It is tobe further noted that a highly-desirable characteristic of bothembodiments of my invention disclosed herein resides in the fact that byadjusting the screws L the outer edges of theflanges may be caused toassume a slightly-angular position relative to the sides of thescreen-frame, so as to correspond to the position of the guidewayincident to the window casing or frame being out of a true verticalplane. This is indicated in Fig. 2.

The screen material is soldered or otherwise secured to the flat outersurfaces of the top and bottom bars and side members.

At the bottom of the screen lifters O are provided to facilitate theraising and lower ing thereof.

in applying the screen the flanges are simply sprung into the grooves ofthe strips B, and when the screen is to be removed a tool, such as P,may be applied to the nuts M and turned to effect a complete retractionof the flanges within the channeled side members whereby they may escapesaid grooves.

It is to be understood that the invention is susceptible of still otherembodiments than those set forth herein and that the structures shownmay be altered and changed without departing from the spirit of theinvention.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is

1. In ascreen, top, bottom and side bars, one of said side bars beingbent to form an out wardly-opening channel therein, a flange in saidchanneled side bar arranged to be thrust outwardly therefrom, aspringinterposed between the inner edge of said flange and the inner face ofthe connecting edge portion of the channeled side bar, and separatedadjusting devices one above and one below the spring operativelyassociated with the flange and projecting outwardly through thechanneled side bar whereby the flange may be positively adjusted againstthe tension of the spring.

2. v In a screen, top, bottom and side bars, one of said side bars beingbent to form an out- \vardly-opening channel therein, a flange in saidchanneled side bar arranged to be thrust outwardly therefrom, a springinterposed between the inner edge of said flange and the inner face ofthe connecting edge portion of the channeled side bar, and separatedadjusting devices one above and one below the spring loosely connectedwith the flange and projecting outwardly through the channeled side barwhereby the flange may be adjusted to occupy an angular position to thechanneled side bar.

A screen having metal top, bottom and side members, one of the sidemembers being bent upon itself to form an ontwardly-open ing channeltherein, in combination with a spring-pressed flange in said channel.

4;. A screen having metal top, bottom and side members, one of the sidemembers being bent upon itself to form an outwardlyopening channeltherein, in combination with a spring-pressed flange in said channel,and means for adjusting said flange against, the tension of its spring.

5. A screen having a frame comprising metallic top and bottom bars andchanneled side members, spring-pressed flanges in said side members, andconnections between the ends of the top and bottom bars and the sidemembers comprising a tongue at each end of the bars and ears on thechanneled side members overlying the same and riveted thereto.

6. A screen having a frame comprising metallic top and bottom bars andchanneled side members, spring-pressed flanges in said side members, andconnections between the ends of the top and bottom bars and the sidemembers comprising a tongue at each end of the bars and ears on thechanneled side members overlying the same and riveted thereto, the inneredge and end edges of the bars adjoining the tongues thereof abuttingsimilar edges on the channeled members.

7. A screen having a frame comprising metallic top and bottom bars andchanneled side members, spring-pressed flanges in said side members, andconnections between the ends of the top and bottom bars and the sidemembers comprising a tongue at each end of the bars and ears on thechanneled side members overlying the same and riveted thereto, an inneredge and an end edge of the bars adjoining the tongues thereof abuttingsimilar edges on the channeled members.

8. A screen havingaframe comprising metallic top and bottom bars andchanneled side members, spring-pressed flanges in said side members, andconnections between the ends of the top and bottom bars and the sidemembers comprising a tongue at each end of the bars and an car on thechanneled side members overlying the tongue and riveted thereto.

9. A screen having a frame comprising metallic top and bottom bars andchanneled side members, spring-messed flanges in said side members, andconnections between the ends of the top and bottom bars and the sidemembers comprising a tongue at each end of the bars and an car on thechanneled side members overlying the tongue and riveted thereto, theinner edge and end edges of the bars adjoining the tongues thereofabutting similar edges on the channeled members.

10. A screen having a frame comprising metallic top and bottom bars andchanneled side members, spring-pressrxl flanges in said side members,and connections between the ends of the top and bottom bars and the sidemembers comprising a tongue at each end of the bars and an ear on thechanneled side members overlying the tongue and riveted thereto, aninner edge and an end edge of the bars adjoining the tongues thereofabutting similiar edges on the channeled members.

11. In ascreen, aframe having channel side member and a spring-pressedflange therein, in combination with an adjusting device comprising ascrew passing inwardly through the channel member and engaging theflange, and a nut on the protruding end of the screw.

12. In a screen, a channel member and a spring-pressed flange therein,in combination with an adjusting device comprising a screw passingthrough the channel member and engaging the flange, and a nut on theprotruding end of the screw, the inner end of the screw being headed andengaging a complementary opening therefor in the flange.

13. In a screen, a channel member and a spring-pressed flange therein,in combination with an adjusting device comprising a screw passingthrough the channel member, and engaging the flange, and a nut on theprotruding end of the screw, the inner end of the screw being headed andremovably engaging a complementary opening therefor in the flange.

14. In a screen, a channel member and a spring-pressed flange therein incombination with an adjusting device comprising a screw passing throughthe channel member, and engaging the flange, and a nut on the protrudingend of the screw, the inner end of the screw being headed, and having arestricted intermediate neck portion, removably engaging a complementaryopening therefor in the flange.

15. A screen having metallic top and bottom bars, metallic side membersedge bent to form an outwardly-opening channel therein, an interflttingconnection between the ends of the top and bottom bars and side members,and adjustable flanges in said channel side members.

16. A screen having metallic top, bottom and side members, one of saidside members being bent upon itself to form an outwardlyopening channeltherein, interfitting connections between the ends of the top and bottommembers and the side members, and an ad justable flange in said channelside member. 7

17. In a screen, a channel member and a spring-pressed flange therein,in combination with an adjusting device including a screw passingthrough the channel member having a head at its inner endremovablyengaging a complementary opening therefor in the flange.

18. In a screen, a channel member and a spring-pressed flange therein,in combination with an adjusting device including a screw passingthrough the channel member and having a head at its inner end adjoininga restricted intermediate neck portion removably engaging acomplementary opening therefor in the flange.

19. A screen having a frame comprising top, bottom and side members, oneof the side members being bent to form a channel, an adjustable flangein said channel, and connections between the ends of the top and bottommembers and said channel member comprising interfitting tongues and earsrigidly secured together.

20. A screen having a frame comprising top, bottom and side members, oneof the side members being bent to form a channel, an adjustable flangein said channel, connections between the ends of the top and bottommembers and said channel member comprising interfitting tongues and earsrigidly secured together, and an end edge of the top and bottom membersadjoining the tongues thereof abut ting similar edges on the channelmembers.

21. A screen having a frame comprising a top, bottom and side members,one of the side members being bent to form a channel, an adjust-ableflange in said channel, connections between the ends of the top andbottom members and said channel member comprising interfitting tonguesand ears rigidly secured together, and an inner edge on the top andbottom members adjoining the tongues thereof abutting a similar edge onthe channel member.

In testimony whereof I afliX my signature in presence of two witnesses.

EDWARD T. BURROWES.

Witnesses:

FRANK L. RIoKER, STEPHEN W. CABLE.

